JPS5699314A - Wide angle lens of short overall length - Google Patents

Wide angle lens of short overall length

Info

Publication number
JPS5699314A
JPS5699314A JP57380A JP57380A JPS5699314A JP S5699314 A JPS5699314 A JP S5699314A JP 57380 A JP57380 A JP 57380A JP 57380 A JP57380 A JP 57380A JP S5699314 A JPS5699314 A JP S5699314A
Authority
JP
Japan
Prior art keywords
lens
directing
overall length
short overall
constitution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP57380A
Other languages
Japanese (ja)
Inventor
Hisao Fujita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP57380A priority Critical patent/JPS5699314A/en
Publication of JPS5699314A publication Critical patent/JPS5699314A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain a lens of a short overall length and good aberration correction by forming a lens system of 5-group constitution in a manner as to satisfy prescribed conditions.
CONSTITUTION: The 1st lens is positive meniscus directing its convex face to the object side, the 2nd lens is negative, the 3rd lens is biconvex, the 4th lens is negative meniscus directing its strong concave face to the object side and the 5th lens is positive meniscus directing is convex face to the image side, and these are formed into a lens system of 5-group constitution. When the focal length of the entire sytem is defined as (f), the combined focal length of the 1stW3rd lenses f123 and the air space between the 3rd and 4th lenses d6, the conditions of the formulas I and II are satisfied. Thereby, the photographic lens which is about F:5.6 in brightness, is short in the overall lens length including back focus and is good in aberration correction is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP57380A 1980-01-09 1980-01-09 Wide angle lens of short overall length Pending JPS5699314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57380A JPS5699314A (en) 1980-01-09 1980-01-09 Wide angle lens of short overall length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57380A JPS5699314A (en) 1980-01-09 1980-01-09 Wide angle lens of short overall length

Publications (1)

Publication Number Publication Date
JPS5699314A true JPS5699314A (en) 1981-08-10

Family

ID=11477448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57380A Pending JPS5699314A (en) 1980-01-09 1980-01-09 Wide angle lens of short overall length

Country Status (1)

Country Link
JP (1) JPS5699314A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833211A (en) * 1981-08-21 1983-02-26 Canon Inc Small-sized photographic lens
US4787721A (en) * 1984-08-18 1988-11-29 Minolta Camera Kabushiki Kaisha Photographic lens system
JP2018116241A (en) * 2017-01-20 2018-07-26 カンタツ株式会社 Imaging lens
KR20180122915A (en) * 2017-05-04 2018-11-14 삼성전기주식회사 Optical Imaging System

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833211A (en) * 1981-08-21 1983-02-26 Canon Inc Small-sized photographic lens
US4787721A (en) * 1984-08-18 1988-11-29 Minolta Camera Kabushiki Kaisha Photographic lens system
JP2018116241A (en) * 2017-01-20 2018-07-26 カンタツ株式会社 Imaging lens
CN108333715A (en) * 2017-01-20 2018-07-27 康达智株式会社 Pick-up lens
US10809494B2 (en) 2017-01-20 2020-10-20 Kantatsu Co., Ltd. Imaging lens
US11774720B2 (en) 2017-01-20 2023-10-03 Tokyo Visionary Optics Co., Ltd. Imaging lens
KR20180122915A (en) * 2017-05-04 2018-11-14 삼성전기주식회사 Optical Imaging System

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